Aolani “heavenly cloud”

University of HawaiiShantel Hunt, Nick Fisher, Dan Fong,

James Ah Heong, Monica Umeda

Mission Overview:

The mission is to test our COM board, which is based on the MHX-2420 transceiver.

We plan to establish a real time link between the ballonsat and mobile ground station with which we will be monitoring satellite health conditions.

SHOT II / UN-6 Connection:

-UN-6 mission is to provide orbital radar calibration support to the Air Force by collecting and disseminating ephemeris data in response to radar interrogation

-UN-6 payload hardware is undergoing space environment testing provide by our customer

-COM subsystem supports interrogation schedule uplinks and ephemeris data downlinks

-SHOT II provides the COM subsystem with communication and operational testing in a near space environment

SHOT II Software Flow:

Aolani

dsPIC33fj128mc804

Microchip Technology Inc.

SHOT II Software Flow:Aolani

GROUND STATION

???

Aolani

RS-232

3 Commands:1. GPSD

a) Downlink ephemeris data.2. TEMP

a) Downlink temperature data.3. SCHD

a) Uplink schedule set.

>log rangecmp ontime 1

OKRANGECMP COM1 0 84.0 FINESTEERING 1581 433800.000 00040000 9691 3642 8 049c1018aaa0ff1ff11cf80ad6f1c8cbf3029a0700020000 0b9c3011b2b5ff5f231df80a9646dafef5029a0760010000 a49c1018d0140ac0e903820ab1595c99401ca02ba0030000 ab9c301105db07402204820a252e4dbb821cb02720020000 649d1018e31200701ddaed095dacaffa8008731d20030000 6b9d3011ba0e001047daed099ab72387c2088f1b20020000 849d100866d4f7efa67ae50a376b06d85004752020030000 8b9d30012aa2f92ff57ae50af8e86388c204752020020000

Sample GPS Data Packet

Howzit?

Just hanging…

SHOT II Design:

Flight Interface

External Power Switches

Mass of 1.150 kg

Expected Results:

• Establish a communication link

• Uplink commands

• Downlink data

• Ephemeris data

• Satellite state of health data

• Uplink schedule set

• Monitor ground station RSSI level

Demonstration:

Demonstration:

COM Board

Video Camera

Digital Camera

Batteries

3.3V & 5VConverters

Heater